Type-writing machine.



G DELVIGNEQ TYPE WRITING HAGHIHE. APPLIOATIM ILBD muss, 190s.

Patented July 20, 1909. a SHEETS-SHEET a;

I VEN UR,

@ q lai HISATTDRNEY G.'DELVIGNB. TYPE WRITING MACHINE. APPLIOATION FILEDMAY 23, 1908;

Patented July 20. 1909.

8 SHEETS-SHEET 3.

WITNESSES.-

HISATTEIRNFV letter s character.

CHARLES DELVIGNE OF BRUSSELS, BELGIUM, ASSIGNOR TO WYOKOFF, SEAMANS &

BENED1OT,-OF ILION, NEW

YORK, A CORPORATION OF'NEW YORK.

TYPE-WRITING MACHINE.

Spepification of Letters Patent Patented July 20, 1908.

' Application filedfmay 23, 1908. Serial No. sees is.

To all whom it may ponder/t:

Be it known that I, CHARLES DELVIGNE, sub'ect of the King of Belgium,and resident of russels, Bel ium, have invented certain new and usefuImprovements in Typeof which the following is a specification.

"My invention relates to back spacing mechanism for the carriages oftypewriting lmachines, and its object, generally stated, is to provideimproved devices of the class specified, although it will be understoodthat various features of the invention maybe used in connection withdevices of To the above and other ends-the invention consists in thefeatures of construction, combinations of devices and arrangements ofparts hereinafter described and particu: larly pointed out in theclaims.

As heretofore constructed, back devices have usually been operated to spthe carriage backward step-by-step a slngle letter space distance at atime. By my improved -devices' the operator is enabled to move thecarriage backward either a single ace distance or a plurality of letterspace rality of letter space distances be-in variable and depending onthe numloer ofetters in the Word just Written. In other Words, if

in the-course of the Writing it is desired to re turn to theheginn-ing'or initial letterof the last written word, as, 'forprovenients enable this to gle operation Whatever the spaces to hecovered byturn limits.

In carrying out he done ay a sinnumber of letter this continuousremovement may be, Within certain my invention in the presentinstance Ihave provided back spacing or feeding mechanism and,associatedtherewith, certain stop devices which can beset by operating acerta-hi key when the carriage is-at any letter-space position-in theline of writing. The Writin may then be continned and when it is res'ired to bring the cardifiercnt spacing istances at one operation, thepln example, when it is desired to underscore the word, my lmbe arrestedat the letter space po-t' riage'hackward step-hy-step a letter space.

distance at a time.

In carrying out my invention in the present case 'I-have applied it toa--'Re1nington t' pewriting machine, but the character of the inventionis such that it maybe readily ap lied to other styles of writingmachines. n the accompanyingdrawings, Figure 1 is a vertical frontRemington typewriter showing my invention applied thereto, parts of themachine being omitted and parts broken away; Fig. 2 is a fragmentaryrear elevation of the machine partly in section. Fig-s33 to Tincl-u'sivcare de'tai ed--vicws of various parts of my improvements to hehereinafter descrihedrnore specifically. e-evation, partly in section,showing some of the mechanism for controlling a part- -he1"einatterreferred to as the'loa'ck element. *Fig. '9 isa frag-mentary'rear-elevwtion of certain of thepar-ts shown in Fig. 8. Fig. l-O is a viewcorresponding to Fig. 9 but showing various of the parts in di-flerentrelations from those in which they appear in said Fig 9..

'eterr-ing first more especially to Figs. 1 and '2, the-main frame ofthe 'IHELCh'lHR coniprises a base 1, corner posts 2 and a top plate" 3.Key levers (not shown) are tu-lcrn-Ined m: 4 in the rear of the baseandare connected in spacing wheel or to rear sectional View of a Fig. 8 isa fragmentary side 85 the usual Way to type hers (not'shown) circularlyarranged on the top'plate, said type bars cooperating with a platen aplaten frame or carrier '6, said platen carrier being provided with aroller? which runs on a shift rail 8. The platen carrieris pivota-llyconnected bymeans comprisinga-rock shaft 9 and arms in which are mountedrolleisiz. the-latter cooperating with a track-way 1'3 liX-edahove tintop plate. ldhe'piaten carrier-and carriage ll) with a carriage truckI].

5 mounted in truck compose the carriage of the machine, the carriagebeing constantly urged leftward across the top plate by a spring drum 14which is connected with the carriage truck by a band or strap 15. A feedrack 16 is sup ported on arms 17.pivoted at 18 on the carria e truck.said feed rack normally meshing with a feed-pinion 19 fixed at theforward end of a horizontally disposed shaft 20, said shaft beingmounted on-a beai ing bracket 21 spring drum .14 as well as for variousparts of my improvements. Fixed to the horizontally disposed arm 26 ofthe dog'carrier is an extension 27 provided at its ends with notcheswhich are engaged by the hook-like 'of which only is shown.

upper ends of arms or links 28, said arms depending from the extension27 and carrying at their lower ends a universal bar 29. The universalbar underlies the set of key levers and the usualspacing frame, thelatter comprising spacing levers 30, one at each side of the base andfulcrumed at 4 and also comprising a space bar or key 31 connecting thespacing levers at their forward ends and located in front of and belowthe usual set of printingke s. The spacing frame is provided with theusual restoring springs 32, one

It will be understood that when the space bar 31 or any one of theprinting keys is suitably depressed, it acts on the universal bar 29,causing the escapement devices to cooperate in the usual manner topermit a letter space movement of the carriage in' rinting or leftwarddirection under the niil of the spring drum 14. The parts thus fardescribed are or may be of the usual construction and amore extendeddescription is therefore not considered 11 80958 ELl'y.

.which receives set screws 37, the latter engaging the shaft 20 andmaintaining the housing in a fixed rclat ion therewith. VVithin thehousing are pawls 38 ivoted on said housing at 39 and constant y pressedinto engagement with the teeth of the ratchet whcel 34 by springs 40.The construction of the ratchet wheel, housing and springpressed pawlsjust described is well known and is the same as that employed inconnecturn therewith.

"lus.

tion with the escapement wheel 22 both in construction and action. Thearrangement is such that when the carriage feeds in letter spacedirection the shaft 20 turns in the direction of the arrow in 5, causingthe housing .35, which -is fixed to said shaft, to As the housing turns,the pawls 38 carried thereby cooperate with the ratchet wheel 34 tocause it and'the gear wheel 33 to turn also. \Vhen the carriage is drawnbaclnvard or in return direction independently of the back-spacingdevice, however, the ratchet wheel and pawls co.- operate to permitrotary movements of the shaft 20 without affecting the gear wheel 33.

The gear wheel 33 cooperates with a rotary element or stop wheel, thedetails where-- of are most clearly shown in i igs. 3 to 7 in-- elusive.

This rotary element or sto wheel comprises an annulus 41 (figs. 3 an 7),the

periphery of which is toothed to mesh with the gear wheel 33, -l i,ttedin the central opening of the annulus 41 are two disks 42 and 43 igs. 4and 7). it adiallugs 44 projecting inwardly from the annulus 41 maintainthe disks 42 and ,43 separated or apart as showir in Pig. 'Z, and lugs45 diametrically disdose two on" each disk, are adapted to .fit etweenthe pairs of radial lugs 44 on the annulus 41 so as to revent relativerotary movement between t ie disks and the annu- Screws 46 connect thedisks, the construction being such that when said screws are tighttheannulus and the two' disks are maintained in a fixed relation andoperate as a smgle piece or member. The periphcries of the disks 42 and43 are formed with rounded notches or cut-aways 47, these be ingarranged at regular intervals and the notches of one disk registeringwith those of the other, there being inthe resentinstance 24 notches ineach disk. sated movably in the opening formed by each pair of notchesand the annulus is a stop device or pin 48 shown detached in Fig. 6.member is cut away as indicated at 49 to fit in its associate bearingopening. The cutaway 49 of each pin'leaves a head at each endthereof,,the length of the cut-away being greater than the width of theannulus 41 as will be understood from an ins ection of Figs. 7 and 1.The pins 48 are rictionally held in the bearing openings in the stopwheel and are capable or being moved lengthwise in said wheel, theextent of such move- 7 from the front fa e of the supporting bracket YThis pin or 25. The rear end portion of the shaft 50 is it is inregister, longitudinally rea ward to stepped down and squared asindicated at the position illustrated in Fig. 8, the move- 02 and 53(Fig. 7). 52 and 53- coiperate with corresponding squared openingsformed respectively in the disks43 and 42;. A headed screw 54 serves tosecure the stop wheel to the shaft 50.

' Mountedon the forward end of said shaft is zr'gear wheel 55 (Figs. 1and 2) having a hub 56 which receives a set screw 57, said set screwabutting against the shaft and maintaining the gear wheel in a fixedrelation therewith.

It will be understood that when the carriage isted in letter spacedirection the gear wheel 33 will. operate to turn the stop wheel in'thedirection of the arrow in iig. 2. The parts are so' pl'oportioneilthatthe distance that the stop wheel. is fed'at each letter space moveniient0f the carriage corresponds to the distance'between the centers ofanyjtwo of thespacingpins 48,- said pins of course being equaly s aced,apart. 11 other words, at the endo each letter space, movement each gw tat t e pini nmediately n advance of it Qccu ied ust prior to saidmovement.

Normally the spacing pins 48 are arranged as shown in Fig. 1 with theirrear heads in;

contact with the rear face of the annulus 41. Each of these nins, whenpushed rearward to the position illustrated in Fig. 8, is adapted tocontrol the extent of back spacing movement of the carriage, as will behereinafter explained] In the present instance the means for pushing.the spacing pins from norto rearmost position are connected with thespacing key and comprise a cylindrical pin or plunger 58 (Figs. 1 and8),-which bears in an opening in the bracket 25 and is normallymaintained in the position shown in Fig. 1 bya coiled spring 59.Projecting laterall from the forward end of the plunger 58 is 'a ug 60which cooperates with an o )811 slot 61 formed in the downwardly extening arm of abell crank lever 62 pivoted at 63-on an car 64 on thebracket 25. The i'orwardl extending arm of the hell crank lever 62 isconnected by a link 65 with the middle portion of a cross bar 66 (Figs.1 and 2), said cross bar extending from side to side. of the machineabove the key levers andbeing con-- nected by straps 67 with thespacinglevers 3,0. strap 67, the straps being clamped or loc by nuts 68 on theend portions of the cross bar -The construction is such that the plungeror projecting device 58 is always in ine or register with one of thespacing pins 48L When the spacing bar 31 is depressed to Spacebetweenwords or for any other urposethe link 65 is pulled downward,rocfiing the bell; crank lever 62 and forcing the plunger'58 rearward,causing said plungerto.

rhove'the spacing pin or'stop 48 with'which pin will occupy the sameposition.

Each spacing lover is embraced by a ed The squared portions j l.

"in reverse ment'of said pin .48 being arrested when its forward headcontacts with the front face of the stop wheel.

When the spacing pins are in their projected or rearmost positions theyare adapted for reasons hereinafter explained. to cooperate with acombined stopor abutment and cam member, said combined abutment and caminemberin the present instance being in the form of a lever 69 pivotedon a shouldered screw 70, the latter being supported on a block 71secured by screws 72 to a lug 73 extending rearward from the bracket 25(Figs. 2 and 8). Viewed from the side (Figs. 1 and 8) the lever 69 isarranged at an angle to the rear face of the stop wheel, so that theadjacent face of said lever may act as a cam to cooperate with the pins48 during the rotary movements of the spacing wheel, with the resultthat during their passage downwardv behind the lever 69 from the tomthereof any of such I been projected previous y by the plunger 58 willbe restored automatically to normal, position. The lowerend portion ofthe memeror lever 69 is cut-away as indicated at 74 to provide anopening through which the.

pins 48 asthey are brought opposite to or in register with the plunger58 maybe projected by said glungcr when the space key 31 is operated.slow the opening 74 the lever terminates in a nose or stop lug 75. Aleaf spring 76, held by the screws 72', cooperates with the upper arm ofthe lever 69 to maintain it normally in the position shown in cuttingaway or depressing the front face of the block 71 i ever' 69.' WVhen thep unger Figs. 2 and 9, in which position said-lever is arrested by ashoulder or ledge 77 formed by 10,5 ad Iacent to the screw 7 0 t form aseat for said 58 operates to project one'of the pins t8 said pin will bepressed rearward in or through the opening 74 in the lever 69. letterspace movement of the carriage thereafter, t 1e rear head of theprojected pin will act against the nose 75 and turn the lever 69 on itspivot against the tension of the-s )ring 76 (Fig. 10). Toward the end ofthis letter space movement the pro'ectedpin moves away from the nose 75an permits the lever 69 to return to normal position with the nextfollowing pin inv register with the opening74 and so that the nose orstop lug '7 5 will be in position to contact with the head of therejected pin and arrest the back spacing, w eel should the latter bemoved in reversedirection by any backward spacing movement which ma ecommunicated to the carriage by the wheeh i I i In order to space thecapriageoacaward or direction, devices are provided comprisin aninternally toothed ear so; ment 78 igs. l and 2), said geai segnient Atthe first being adapted to cooperate with the gear wheel 55 at the tothereof, but being normally disengaged t erefrom. The ear segment 78 issecured by screws 79 to t 1e upper triangularly shaped arm of a lever80, said lever being pivoted on a shouldered screw 81 received in a bossor lug 82 pro'ecting forward from the supporting bracket 9 wire spring83 is COll6d around the boss 82 and tends constantly to press the upperarm of the lever 80 toward the left as viewed from the rear and to movethe gear segment '78 leftward ver the top of the gear wheel '55,

maintaining a projection 80" on said lever normally in contact with alug 80 depending from the top plate. I

It will be understood that when the gear segment 78 is moved rightwardas viewed from the rear, it will engage with the gear wheel 55, turningthe latter and through it the stop wheel, causing the teeth of-theannulus 41 to cooperate with the gear wheel 33 to turn thelatteibackward so that the teeth or the ratchet wheel 34, acting against thepawls 38, will turn the housing 35 backward and, through it and theshaft 20, inion 19 and rack 16, move the carriage bac ward or in reversedirection. The means for moving the gear segment 78 in the manner justdescribed are illustrated in Figs. 1 and 2 and comprise a link 84pivotally connected at one end with the lower arm of the lever and atthe opposite end with the lower end of a crank arm 85 said crank arm atits upper end prevented by the cooperation of the hub 86 with the rearlug 89 and in the opposite direc tion by the cooperation of the forwardlug 89 with a collar 90 fixed to the shaft by a set screw 9 The forwardend of the rock shaft is slightly reduced in diameter, as indicated at88, and terminates just in rear of the de pending lip 3 of the top late3. Fixed to the reduced end of the rec shaft by a pin 92 is a crank armor handle 93 which extends downward in front of the right-hand frontcorner post and terminates in a finger piece 94 a short distance abovethe base of the machine. Loosely mounted on the reduced end portion ofthe rock shaft 88, behind the crank arm 93, a sho ter arm or stop member95,

' said arm or member being confined between the crank arm 93 and theshoulder formed between the body of the rock shaft and the reduced end88 thereof. The lower end of the arm 95 terminates ina linger portion 96which overlies the crank arm 93 above the wheel or element backward inadirection finger portion 94 thereon. A lug 97 pro ects E oppositeto thearrow in Fig. 2. The extent of the carriage. The rock shaft extendsforward.

laterally from the arm 95 near the upper end thereof and receives anadjustable thumb screw 98 which underlies the li 3 of the top plate, thepoint of said screw ,eing adapted to contact with the lower ed e of saidlip and serving as a stop to arrest t e arm 95,

Certain features of the operation of my invention not hereinbeforeexplained may now be. referred to. It will be understood that when theprinting keys are operated, the associate type bars will be caused toprint and the carriage will be moved step-by-step in printing or letterfeeding direction; that is, toward the left viewed from the front of themachine. During this movement, the stop wheel and connected parts willturn in the direction of the arrow (Fig. 2) while the handoperateddevices for controlling said spacing wheel (said hand-operated devicescomprising the gear segment 78, the lever 80, link 84,

crank arm 85, rock shaft 88 and arms 93 and 95) will remain motionless.If at'any time it is desired to space the carriage bachward a singleletter space the operator presses the finger piece 96 toward the right,(viewed from the front of the machine) causing the arm 95 to turn untilthe screw 98 contacts with the lip 3 of the top platen Because of thefinger portion 96 overla ping the crank arnr93, said crank arm willparticipate in this movement of the arm 95 and will rock the shaft 88and through the aln ve described connections will swing the gear segment78 into engagement with the gear wheel 55, turning the latter and thespacing wheel and causing a baclnvard spacing movement The extent ofthis make-- ment will depend on the point at which "the screw or stop 98contacts with the top late, and is preferably limited to a single ottespace distance.

It will be understood that each time the space bar or key'31 is operatedto space be tween words or for any other purpose, one of the spacing orstop pins 48 will'be projected and that during subsequent letter feedingmovements of the carriage said projected pin will travel with thespacing wheel in the direction of the arrow in Fig. 2 ur til said pinhas completed nearly a full revolution and engages with the inclined orcam face of the cam member or lever 69 which automatically pushes thepin forward and restores it] to normal position. to the pro ection ofsaid )in and during the course of the printing of tlie followingworditis desired to backspace the carriage until the first lette. of said wordis oppositetl printing point, the finger piece 94 is pressed righ tward("iewed from the front of the machine),

causing the gear segment 78 to cooperate with the gear wheel 55 and turnthe spacing 1f, however, subsequent tors printed in the word and will94, the arm am fi i tiiigi of this backward rotation of the s acingwheel and consequently the extent oi back spacing of the carriage willdepend on the number of'ste )s the projected pin .3 has moved from thenoseor stop 75. As has been stated, each letter space movement of thecarriage causes the spacing pins 48 to move a distance corresponding tothe distance between the centers of adjacent spacing pins. it will beevident therefore that the continuous backward movement of the spacingwheel and; carriage imparted by the arm 93 will correspond to the numbcrof letequal the letter space feed movements imparted to the carriage inwriting said letters. When the crank arm )3 is 0 )erated by the fingerpiece l the stop QSthe-reon do not cooperate with the crank arm 93 toarrest it, but permit the crank arm 93 to be moved away from the arm 95until said crank arm is arrested by the projected stop in 48. After anyback spacing movement t e gear segment 78 and connected partsLWill bere: stored to normal position'by the operation of the sprin 83.

What I c airn as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a carriage, means forfeeding the carriage step-by-step in printing direction, and a keyoperated back spacing meehanism'ineluding means for feeding the carriageback ward and means tor arresting said carriage after it has been fedbackward a variable distance and prior to its reaching the beginning ofthe line of writing; a single key being operative to feed the carriagebackward varying extents prior to its arrest.

2. a typewriting machine, the combination of a carriage, means forfeeding the earriage step-by-step in vprinting direction, and

a back spacing mechanism including means for feedingthe carriagebackward by a continuous mot-ionnntil the first letter of the last ordprinted has been brought oplposite the prining point and then "positivey arresting tie carriage.

' 3. In a typewriting machine, the combination of a carriage, means forfeeding the. carri ge step-b-'-step in printing direction, and a nickspacing mechanism including means forfeeding the carriage backward andmeans for arrestingsaid carriage after it has been so fed a singleletter space and also after it has been so fed a variable number ofletter spaces. either extent of back feeding being selected at 4. in a,typewriting machine, the combination of a carriage, means for feedingthe carriage step-by-step in printing direction, and a backspacing'mechanism' including means for feeding the carriage backward andmeans for arresting said carriage after it has heei'i so step-by-step'inprinting direction, said beginning fed, a single letter space and alsoafter it has been so fer a variable number of letter spaces de ending onthe number-of letters in the word ast printed I 5. In a'typewritingmachine, the combination of a carriage, means for feeding the earriageetep-by-step in printing direction, and back spacing mechanism includinga rotary back spacing element connected with the carriage so as torotate as the carriage is fed stepby-step in printing; direction, saidrotary element being rotatable in the opposite or back spacingdirectionfor Varying the extent o ack spacing rota; tion of saidrotaryeleinentinde enc lently of the marginal positionrol arrest 0 thecarr age and of said rotary element. i

6. In a typewriting machine'the. eo lnbi na tion. of a carriage, meansfor feeding t is earriage stepby-step in printing direction, and a backspacing mechanism including a rotary back spacingelelnent connected withthe carriage so as to rotate as the carriage is fed rotary element beingrotatable in the opposite or bacl-I spacing direction by hand. egrdmeans 0 erating automatically to varia ly control t 1e extent of backspacing rotation of said rotar element ivherebytl ie carriage may bycontinuous movement bev moved, to the of the word last Written. 7Q In atypewriting machine, the combination of a carriage, means for feedingthe carriage step-by-step in prin tingdirection, hack spacing mechanismincluding a rotary back spacing element connected with the carriage soas to, rotate as the carriage is fed step-bystep in printing direction,said rotary element being rotatable in the opposite or back s acingdirection by hand, and a stop on said e ement adjustable to limit itsincrement in baclc spacing direction.

8. In a typewritii ig machine, the combination of a carriage, means forfeeding the carriage step-by st'ep in printing direction, back spacingmechanism including a rotary back spacing element connected with thecarriage so as to rotate as the carriage is fed step-bystep in printingdirection, said rotary element being rotatable in the opposite or backspacing direction by hand, and a plurality of stops on said element,said stops beingvindependentiy adjustable to "vary the extent ofmovement of said element in back spacing" direction. 3

9, in a typewriting machine, the combination acarriage, means torfeedingthe carriage step-bystey in printing direction,

ll hand, an; means a, stop device controlled by said key and moving withthe carriage, means for moving the carriage backward, and a stop devicecopporating with the first recited stop device to arrest such backwardrotation of the carria e.

H. In a typewriting machine, thc com ination witha carriage'and meansfor feeding.-

said carriagesin" printing direction, of a key which may be operated inthe course of the 10 printing, a stop dcvice set by said key, means 4nation with a carriage and means for feeding said carriage. in printingdirection, of a key that can be operated when the carriage IS in letterspace position, means for feeding the carriage backward, and a stopdevice con.

trolled by said key for arresting the backward feed of the carriage at aletter space posltion bearing a predetermined relation to that at whichsaid key was operated.

13. In a typcwriting machine, the combination with a carriage, means forfeeding the carriage step-by-stcp in printing direction 3 and a spacekey connected with said means,

of back spacing mechanism for said carriage, and means set by said spacekey for limiting the extent of motion of said back spacing mechanism.

3 14. In a typewriting machine, the combi nation with a carriage, meansforfcedingjhe carriage step-by-step in printing direction and a spacekey connected with said means, of back spacing mechanism including arotary elen'icnt, hand controlled means for rotating said element inback spacing, direction, and means set by said' space key for limitingthe extentof such rotation.

]5. In a typcwriting machine, the combination witha carriage, means forfeeding the carriage step-by-step in ,printingdirection and a space'keyconnected with said means, of back spacing mechanism including a rotaryelement, hand controlled means for rotating said element in back spacingdirection, and means on said element for varying the extent of itsbackward rotation, saidlast -pained means being set by said space key.

' 16. In a typewriting machine, the combi- -.nation with a carriage,means for feeding the carriage step-by-step in printing direction and aspace key connected with said means, of back spacing mechanism includinga rotary element, hand controlled means for ro- 0 rating said element inback spacing direction,

a plurality 'of stops adapted to limit the extent of back spacingrotation of said element, said stops being normally in inoperativeposition, and means operative by said space tion.

17-." In a typewriting machine, the combination with acarriage, meansfor feeding the carriage stc -by-step in printing direction, and a spaceey connected with said means, of back spacing mechanism including arotary element, hand controlled means for rotating said element in backspacing direction, a plurality of stops on said clement, said stopsbeing normally in inoperative position, and means operative by saidspace key for moving said stops one at 'a time to operative position. 3

i8. In a typewriting machine, the combination of a carriage, backspacing mechanism therefor including a-rotary back spacing element, andconnections between said carriage and said element, said connectionscomprising a shaft, a gear wheel and a pawl and key for moving saidstops operative posiratchet connecting said gear wheel and said shaft.

19. In a typewritin machine, the combination with a power dl'ivencarriage and escapement devicestherefor including an cscapement wheeland an escapement whccl shaft, of back spacin devices comprising arotary back spacing element and a pawl and ratchet connection betweensaid element and said escapcmcnt wheel shaft.

20. In a typewriting machine, the combinatioxrwith a power drivencarriage and is c-apemcnt devices therel -or including an cscapementwheel and an escapemcnt wheel shaft, of a back spacing clcment providedwith a gear and connections between said back spacing element and saidescapement wheel shaft including a gear wheel meshin with said gear, aratchet rigidly connecter with said gear, and a pawl engaging with saidratchet and mounted to turir bodily with said escapemcnt wheel shaft:

2]. In a typcwriting machine, the combination with a carriage and meansfor feeding the carriage step by-step in printing direction, of backspacing mechanism com )rising a back spacing element, a set of stopdevices movably mounted thereon at letter space distances apart, saiddevices being normally in inoperative position, and means for movingsaid stop devices one at a time relatively to said element to operativeposition.

22. In a typcwritmg machine, the coinbination with a carriage and meansfor feeding the carriage step-by-step in printing direction, of backspacing mechanism including a back spacing wheel, a set of stop pinscircu larly arranged thereon at letter space intervals, said pins beingnormally in inoperative position, and means for-"moving said pins one ata time relatively to said wheel to operative position. H

23. In a typewriting machine, the combi- I nation with a cai riage andmeans for feeding sthe carriage stepby-step in printing direc- Ill Ill)

tion, of back spacing mechanism including a rotary element, handcontrolled means for rotating said element in back spacing direction, aplurality of stops normally in inoperalivc position but adapted to limitthe ex lent of hack spacing rotation of said ele ment. he controlledmeans for moving said stops relatively to said element into operie,

live position, and automatic means for restoring said stops to normalposition.

34. in a. lypmvritins machine, the combination with a carriage. meansfor feeding the carriage step-by-step in. printing, direction, and aspace key connei tcd with said means, of backspacing mechanism-includinga 1'0- tary element, hand controlled means for rotating said element inback spacing direction, a set of stops adapted to limit the extent ofback spacing rotation of said element, said stops being normally ininoperative position, means operated-by said space key for moving saidstops to operative position, and means operating automaticallyto restoresaid stops to normal or inoperative position during roracv movements ofsaid element.

25. In a typevriting machine. the combination with a carriage and meansfor feeding .said carriage step-by-step in printing direction, of backspacing mechanism including a back spacing element connected with saidcarria e and carrying relatively movable stop devices, means for movingsaid devices from normal position one at atime and rela tively to saidelement, and means operating automatically during the movements of saidelement to move said devices back to normal position. i

26. In a typewritin'g machine, the combination with a cal-rinse andmeans i or feeding said carriage step-,b'y-stepin printing direc-.

tion, of back spacing mechanism including-a back spacing elementconnected with said carriage and carrying relatively movable stopdevices, means for moving said devices from normal position one at atime and relalively to said element, and a mim'operating auton'iaticallyto move said dcviccs back to normal position.

27. In a typewriting machine, the combination with a carriage and meansfor feeding said carriage step-by-step in printing direction, of backspacing mechanism including a back spacing element connected with saidcarriage and carrying relatively movable stop devices, means for movingsaid devices from normal position one at a time and relatively to saidelement, and a stop cooperative with 'said devices to arrest saidelement.

28. In a typewriting machine, the combination with a-carriage and meansfor feeding said carriage step by-step in printing direction, of'baclrspacing mechanism including a back spacing element connected with saidcarriage and carrying relatively inovable stop devices, means for movingsaid devices from normal position one at a time and.relatively to saidelement, and a member cooperative with said devices when said elementIS- moved in one direction toarrest said element and operating when saidelement is moved in the opposite direction to automatically move saiddevices back to normal position.

29. In a typ'ewriting machine, the combination with a carriage and meansfor feeding said carriage step-by step in printing direction, of backspacing mechanism including a back spacing element connected with saiddarriage and carrying relatively movable stop devices, means for movingsaid devices from normal position one at atime and relatively to saidelement, andia combined cam and stop- 0 )erative at one time tocor'ipcrate with said evices to arrest said element ,and

.at another time to cam said devices hack to normal position.

30. la atypewriting. machine, the combination with a carriage and meansfor feeding said carriage step-by-step in printing direction, of backspacing mcchanism including a back spacing element connected with saidcarriage and carrying relatively movable stop devices, means for movingsaid devices from normal position one at a time and relatively to saidelement, and a spring pressed lever pivotally mounted. on the machineframe and cooperating with said devices to arrest said element and alsocooperating with said devices to move them relatively to said clementback to normal position.

31. In a typewriting machine, the combinationwith a carriage and meansfor feeding the carriage sicp-hvsicp in printing direction, of backspacing mechanism including a rotary back spacing element. connected loturn with the carriagc as the carriage is l'cd in prin'tin direction,and hand controlled means in turning said element in the oppo sitedirection, said hand controlled means including-a gear wheel rigidwithsaid element, a gear segment adapted to mesh with said gear whccl, arock shaft, a link connecting saidgcar segment with said rock shaft, anda crank arm rigid with said rock shaft and provided with a finger piece.

32. In a typewriting machine, the combination with a carriage and meansfor feeding t the carriage step-by-step in printing direc- 7 tion, ofback spacing mechanism including a rotary back spacing clement conneptedto turn'with the carriage as the'carriage isfed in printing direction,and hand controlled means for turning said element in the -oppositedirection, said hand controlled means 1nchiding a rock shaft, a crankarm rigid thereon, andastop arm loosely mounted on said rock shaft andadapted to control said crank arm.

33.- in a typewriting machine, the combi nation with a carriage andmeans for-feeding the carriage step-hystep in printing direction, ofback spacing mechanism including a rotary hack spacing element connectedto turn with the carriage as the carriage is fed in printing direct-ionand hand controlled means for turning said element in the oppositedirection, said hand controlled means including a rock-shaft, a (JRILlCarm rigid with said rock shaft, a stop arm loose on said rock shaft andoverlying said crank arm, said crank arm being adapted to be moved bysaid stop arm a predetermined extent and being adapted to he movedindependently of said stop arm variable extents.

' 34. In a typewriting machine, the combination with a carriage, meansfor feeding the carriage ste )-by-step in printing direction and a spacercy connected with said means, of back s acing mechanism including amovable bacr spacing element connected with the carriage, stop deviceson said element, and a device operated by said space key for moving saidstop devices one at a time relatively to said element.

35. In a typewriting machine, the combination with a carriage, means forfeeding the carriage step-by-step in printing direction and a space keyconnected with said means, ol'a rotary back spacing element, a set ofstop pins mounted on said element and movahle relatively thereto intoand out of operative position, said pins being normally inoperative, anda plunger connected with said space key and operated thereby to movesaid stop pins one at a time to operative position.

36. in a typewriting machine, the combination of a frame; a carriagemovable across said frame for letter spacing; a row of settable stopsand 1 setting device for said stops, one of the last recited parts beingconnected to move past the other as the carriage moves across the framea key connected with said setting device to set the stop that happens tobe in register With said setting device when the key is operated; and astop cooperative with said settable stops.

37. In a typewriting machine, the combination of a frame, a carriagemounted for letter space rn tipn across said frame, a device connectedwitirsaid carriage and carrv ing a series of settable stops, a settingdevice mounted on the frame, a key for operating said setting device toset to operative position Whichever settable stop happens to be inregister with said setting device when the key is operated, and a stopcooperative with said set'table stops.

38. In a typewriting machine, the combination with a carriage, a wheelgeared to said carriage, a series of settable stops mounted on saidwheel, a setting device for said stops, a key connected with saidsetting device for settin to operative position whichever one of sai(settable stops happens 'to be in register with said set-ting device.when the key is operated, and a stop cooperative with said settablestops.

39. in a typewriting machine, the combination with a traveling carriage,of stop dcvices, means for setting one or another of said step deviceswhen the carriage is in any letter space position in its travel acrossthe ma- -hine, means for moving said carriage hackward, and a stopcooperative with'the set stop device to arrest the carriage in itsbackward motion at a letter space positionin advance ol' thatat whichsaid stop device was set differing from but hearing a redeterminedrelation to that at which sai stop device was set. i

40. In a typewriting machine, the combination of a carriage, a series ofsettable stops connected to move with the carriage, a key operatedsetting device for setting In operative position that stop which happensto be in register with said setting device when its key is operated, amovably mounted cooperating'stop arran ed to move when the carriagefeeds forwart after the operation of said key and to drop in behindithe'set sto and means for moving the carriage bac ward, the arrangementbeing such that said cooperating stop will arrest the set stop at aletter space position in advance of that at which it was set. Signed atBrussels, of May A. D. 1908.,

CHARLES DELVIGNE.

Belgium, thisiSth day

